chore: fix gitignore

Author: moshloop

.gitignore

@@ -36,9 +36,7 @@ Thumbs.db
 # Build artifacts
 build/
 dist/
-dns-sync
-dns-sync.exe
-dns-sync-*
+*.exe
 
 # Configuration files with sensitive data
 config.local.yaml
@@ -87,6 +85,7 @@ charts/*/requirements.lock
 
 # Local development
 local/
+bin/
 dev/
 
 # Backup files

cmd/dns-sync/main.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/flanksource/dns-sync/config"
+	"github.com/flanksource/dns-sync/sync"
+)
+
+var (
+	version = "dev"
+	commit  = "unknown"
+	date    = "unknown"
+)
+
+func main() {
+	var configFile = flag.String("config", "config.yaml", "Configuration file path")
+	var logLevel = flag.String("log-level", "info", "Log level (debug, info, warn, error)")
+	var showVersion = flag.Bool("version", false, "Show version information")
+	var dryRun = flag.Bool("dry-run", false, "Enable dry run mode (no changes made)")
+	var once = flag.Bool("once", false, "Run synchronization once and exit")
+	flag.Parse()
+
+	if *showVersion {
+		fmt.Printf("dns-sync version %s (commit: %s, built: %s)\n", version, commit, date)
+		os.Exit(0)
+	}
+
+	// Load configuration
+	cfg, err := config.Load(*configFile)
+	if err != nil {
+		log.Fatalf("Failed to load configuration: %v", err)
+	}
+	if dryRun != nil {
+		cfg.Sync.DryRun = *dryRun
+	}
+
+	// Setup logging
+	setupLogging(*logLevel)
+
+	// Initialize synchronizer
+	syncer := sync.NewSynchronizer(*cfg)
+
+	// Start the synchronizer
+	log.Println("Starting DNS synchronizer...")
+	if once != nil && *once {
+		if err, _ := syncer.Once(context.Background()); err != nil {
+			log.Fatalf("Synchronizer failed: %v", err)
+		}
+	} else {
+		// Setup graceful shutdown
+		ctx, cancel := context.WithCancel(context.Background())
+		defer cancel()
+
+		// Handle OS signals
+		sigCh := make(chan os.Signal, 1)
+		signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
+
+		go func() {
+			sig := <-sigCh
+			log.Printf("Received signal %v, shutting down gracefully...", sig)
+			cancel()
+		}()
+		if err := syncer.Start(ctx); err != nil {
+			log.Fatalf("Synchronizer failed: %v", err)
+		}
+		log.Println("DNS synchronizer stopped")
+	}
+
+}
+
+func setupLogging(level string) {
+	// Configure logging based on level
+	log.SetFlags(log.LstdFlags | log.Lshortfile)
+
+	switch level {
+	case "debug":
+		// Enable debug logging
+	case "info":
+		// Default info logging
+	case "warn":
+		// Warning and above
+	case "error":
+		// Error only
+	default:
+		log.Printf("Unknown log level: %s, using info", level)
+	}
+}